//
// Copyright 2022 SkyAPM org
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

package logrus

import (
	"github.com/SkyAPM/go2sky/log"
	"github.com/sirupsen/logrus"
)

// WrapFormat is wrap format to transmit trace context when logging
type WrapFormat struct {
	Base            logrus.Formatter
	traceContextKey string
}

// Wrap original format
func Wrap(base logrus.Formatter, contextKey string) *WrapFormat {
	if contextKey == "" {
		contextKey = "SW_CTX"
	}

	return &WrapFormat{base, contextKey}
}

// Format logging with trace context
func (format *WrapFormat) Format(entry *logrus.Entry) ([]byte, error) {
	// append trace context
	if entry.Context != nil {
		entry.Data[format.traceContextKey] = log.FromContext(entry.Context).String()
	}

	return format.Base.Format(entry)
}
